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Acquisitions (Details Textual) - USD ($) |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jan. 02, 2020 | Oct. 01, 2018 | Dec. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Business Acquisition [Line Items] |  |  |  |  |  |
Business acquisition, net of cash acquired |  |  |  | $ 11,491,000 | $ 17,194,000 | $ 144,791,000
Goodwill acquired |  |  |  | 9,083,000 |  |
Forte Payment Systems, Inc |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business acquisition date |  |  |  |  | Oct. 01, 2018 |
Business acquisition, cash consideration |  | $ 93,000,000 |  |  |  |
Business acquisition, net of cash acquired |  | 85,000,000 |  |  |  |
Cash initially held subject to certain tax filings |  | 13,000,000 |  |  |  |
Potential future earn out payments |  | $ 18,800,000 |  |  |  |
Potential future earn out payments measurement period |  | 4 years |  |  |  |
Potential future earn out payments measurement date |  |  | Sep. 30, 2023 |  |  |
Accrued earn out payments |  |  | $ 2,400,000 | 2,400,000 |  |
Tekzenit, Inc. |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business acquisition date | Jan. 02, 2020 |  |  |  |  |
Business acquisition, cash consideration | $ 10,000,000 |  |  |  |  |
Potential future earn out payments | $ 10,000,000 |  |  |  |  |
Accrued earn out payments |  |  | 0 | 0 |  |
Earn out and qualified sales payments measurement period | 3 years |  |  |  |  |
Contingent purchase price liabilities | $ 1,500,000 |  | 1,500,000 | 1,500,000 |  |
Goodwill acquired |  |  |  | 9,100,000 |  |
Tekzenit, Inc. | Acquired Client Contracts |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Acquired customer contracts |  |  | $ 2,900,000 | $ 2,900,000 |  |
Tekzenit, Inc. | Contingent Purchase Price Payments |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Potential future earn out payments | 6,000,000 |  |  |  |  |
Tekzenit, Inc. | Financial And Sales Criteria |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Potential future earn out payments | $ 4,000,000 |  |  |  |  |

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